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Ming Lei authored
When blk_mq_get_request() failed, preempt counter isn't released, and blk_mq_make_request() doesn't release the counter too. This patch fixes the issue, and makes sure that preempt counter is only held if rq is allocated successfully. The same policy is applied on .q_usage_counter too. Signed-off-by: Ming Lei <minlei@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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